[U-Boot] Uboot as x86_64 EFI payload
Javier Santos Romo
jsantos at gmv.com
Mon Jan 29 16:36:01 UTC 2018
FYI
________________________________
[cid:image001.gif at 01D39927.A0D208D0]
Javier Santos Romo
Ingeniero de Telecomunicaciones /
Telecommunications Engineer /
GMV
Juan de Herrera nº17
Boecillo
E-47151 Valladolid
Tel. +34 983 54 65 54
Fax +34 983 54 65 53
www.gmv.com <http://www.gmv.com/>
[cid:image002.png at 01D39927.A0D208D0]<http://www.facebook.com/infoGMV>
[cid:image003.png at 01D39927.A0D208D0]<http://www.twitter.com/infoGMV_es>
[cid:image004.png at 01D39927.A0D208D0]<https://plus.google.com/+Gmvcompany>
[cid:image005.png at 01D39927.A0D208D0]<http://www.youtube.com/infoGMV>
[cid:image006.png at 01D39927.A0D208D0]<https://www.linkedin.com/company/gmv>
[cid:image007.png at 01D39927.A0D208D0]<http://www.gmv.com/en/RSS>
[cid:image008.png at 01D39927.A0D208D0]<http://www.gmv.com/blog_gmv/language/en/>
De: Juan Alfonso Reyes Ajenjo
Enviado el: lunes, 29 de enero de 2018 16:18
Para: u-boot at lists.denx.de
CC: Javier Santos Romo <jsantos at gmv.com>
Asunto: Uboot as x86_64 EFI payload
Hi,
I am Juan Alfonso Reyes, a firmware engineer in GMV. Currently we are developing new boards based in Apollo Lake CPU. We are trying to load uboot from UEFI. Using the default qemu-x86_efi_payload64_defconfig we are getting "U-Boot EFI Payload 2002 No memory map" error code.
As I can see in the code 2002 means (efi_stub.c):
ret = boot->get_memory_map(&size, NULL, &key, &desc_size, &version);
if (ret != EFI_BUFFER_TOO_SMALL) {
printhex2(BITS_PER_LONG);
printhex2(ret);
puts(" No memory map\n");
while(1);
return ret;
}
0x20 -> BITS_PER_LONG 32bits
0x02 -> EFI_INVALID_PARAMETER
32bits sounds weird for me, so I changed config to use CONFIG_X86_RUN_64BIT instead of CONFIG_X86_RUN_32BIT. I have changed it and I got a compilation error:
In file included from include/common.h:53:0,
from cmd/efi.c:8:
cmd/efi.c: In function 'do_efi_mem':
./arch/x86/include/asm/global_data.h:117:12: error: 'global_data_ptr' undeclared (first use in this function)
#define gd global_data_ptr
I have surfed in the code and I have found this in ./arch/x86/include/asm/global_data.h
# if defined(CONFIG_EFI_APP) || CONFIG_IS_ENABLED(X86_64)
/* TODO(sjg at chromium.org<mailto:sjg at chromium.org>): Consider using a fixed register for gd on x86_64 */
#define gd global_data_ptr
What do you mean with "Consider using a fixed register for gd" ?Can you help us to make this work? Are we in the correct direction?
Thank you very much,
Best regards,
________________________________
[cid:image001.gif at 01D39927.A0D208D0]
Juan Alfonso Reyes Ajenjo
Ingeniero en Informatica / Computer Systems Engineer
Ingeniero en Automática y Electrónica Industrial / Automation and Industrial Electronics Engineer
GMV
Juan de Herrera nº17
Boecillo
E-47151 Valladolid
Tel. +34 983 54 65 54
Fax +34 983 54 65 53
www.gmv.com <http://www.gmv.com/>
[cid:image002.png at 01D39927.A0D208D0]<http://www.facebook.com/infoGMV>
[cid:image003.png at 01D39927.A0D208D0]<http://www.twitter.com/infoGMV_es>
[cid:image004.png at 01D39927.A0D208D0]<https://plus.google.com/+Gmvcompany>
[cid:image005.png at 01D39927.A0D208D0]<http://www.youtube.com/infoGMV>
[cid:image006.png at 01D39927.A0D208D0]<https://www.linkedin.com/company/gmv>
[cid:image007.png at 01D39927.A0D208D0]<http://www.gmv.com/en/RSS>
[cid:image008.png at 01D39927.A0D208D0]<http://www.gmv.com/blog_gmv/language/en/>
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